Caple C871i Manual do Utilizador descarregar pdf (Página 527)

100

101

Apple II Computer Info

BRL Speed

DA 0 ;= ID of transient commands

ASC 'MERLIN' ;= ID of special EXE file

*========================================

* End of optional structure for EXE file.

*----------------------------------------

Speed PHK

PLB

TSC

STA STACKPNT

TYA

CLC

ADC #8 ;Bypass the "MERLINGS"

STA PNT ; identifier - it is not

TXA ; checked for in this

ADC #0 ; example

STA PNT+2

lda #$8d

jsr OUTPUT

jsr RtnSpcs

print "SPEED shell command by Greg A. DaCosta"

jsr RtnSpcs

SEP %00110000

LDY #0

]LOOP LDX #0 ;Look for "SPEED" in order

PHY ; to align index to the

]LUP LDA [PNT],Y ; following part of cmd.

BEQ :EX ;Something wrong if taken

AND #%01011111

CMP cmdWORD+1,X

BEQ :NX

PLY

INY

BRA ]LOOP

:NX INX

INY

CPX #5 ;all letters?

BLT ]LUP

PLA ;Pop pushed Y

DEY

]LUP INY

LDA [PNT],Y

AND #$7F ;Not needed

BEQ :EX ;Nothing after "SPEED" so

CMP #'*' ; do nothing.

BLT ]LUP ;Bypass delimiter & spaces

LDX #0

]LUP LDA [PNT],Y

Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 527 of 572

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Caple C871i Manual do Utilizador Página 527

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